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Drawing skins in container

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[[Category:Symbian C++]]
 
[[Category:Symbian C++]]
  
The CSkinnedContainer implementation illustrates how to draw skins in CCoeControl derived container within S60 platform.  
+
The '''CSkinnedContainer''' implementation illustrates how to draw skins in a '''CCoeControl''' derived container in the [[S60]] platform.  
  
The iBgContext is the CAknsBasicBackgroundControlContext which is used to draw the skin into the controls background. To draw different screen area you could change KAknsIIDQsnBgScreen identify the background you would like to use with your container.
+
The '''iBgContext''' is the '''CAknsBasicBackgroundControlContext''' which is used to draw the skin on the control's background. To draw on a different screen area you could change '''KAknsIIDQsnBgScreen''' identify to the background you would like to use with your container.
  
Note that for skins to work properly you need to enable skins first, usually this is done in Application user interface classes ConstructL function, by calling the ConstructL function with CAknAppUi::EAknEnableSkin as a parameter.
+
Note that for the skins to work properly you need to enable skins first. Usually this is done in Application user interface class' ''ConstructL()'' method by calling the ''ConstructL()'' method with '''CAknAppUi::EAknEnableSkin''' parameter.
  
 
== SkinnedContainer.cpp ==
 
== SkinnedContainer.cpp ==

Revision as of 11:49, 15 April 2007


The CSkinnedContainer implementation illustrates how to draw skins in a CCoeControl derived container in the S60 platform.

The iBgContext is the CAknsBasicBackgroundControlContext which is used to draw the skin on the control's background. To draw on a different screen area you could change KAknsIIDQsnBgScreen identify to the background you would like to use with your container.

Note that for the skins to work properly you need to enable skins first. Usually this is done in Application user interface class' ConstructL() method by calling the ConstructL() method with CAknAppUi::EAknEnableSkin parameter.

SkinnedContainer.cpp

CSkinnedContainer::~CSkinnedContainer()
{
delete iBgContext;
iBgContext = NULL;
}
 
CSkinnedContainer* CSkinnedContainer::NewL(void)
{
CSkinnedContainer* self = new(ELeave)CSkinnedContainer();
CleanupStack::PushL(self);
self->ConstructL();
CleanupStack::Pop(self);
return self;
}
 
void CSkinnedContainer::ConstructL(void)
{
CreateWindowL();
 
// make first with no size at all
iBgContext = CAknsBasicBackgroundControlContext::NewL(KAknsIIDQsnBgScreen,TRect(0,0,1,1), ETrue);
// Setting rect will cause SizeChanged to be called
// and iBgContext size & position is updated accordingly.
SetRect(CEikonEnv::Static()->EikAppUi()->ClientRect());
 
ActivateL();
DrawNow();
}
 
void CSkinnedContainer::SizeChanged()
{
if ( iBgContext )
{
iBgContext->SetRect(Rect());
 
if ( &Window() )
{
iBgContext->SetParentPos( PositionRelativeToScreen() );
}
}
}
 
 
void CSkinnedContainer::HandleResourceChange(TInt aType)
{
TRect rect;
 
if ( aType==KEikDynamicLayoutVariantSwitch )
{
AknLayoutUtils::LayoutMetricsRect(AknLayoutUtils::EMainPane, rect);
SetRect(rect);
}
 
CCoeControl::HandleResourceChange(aType);
}
 
 
TTypeUid::Ptr CSkinnedContainer::MopSupplyObject(TTypeUid aId)
{
if (iBgContext)
{
return MAknsControlContext::SupplyMopObject(aId, iBgContext );
}
 
return CCoeControl::MopSupplyObject(aId);
}
 
 
void CSkinnedContainer::Draw(const TRect& aRect) const
{
CWindowGc& gc = SystemGc();
 
// draw background skin first.
MAknsSkinInstance* skin = AknsUtils::SkinInstance();
AknsDrawUtils::Background( skin, iBgContext, this, gc, aRect );
}

SkinnedContainer.h

#include <coecntrl.h>       // CCoeControl
#include <AknsBasicBackgroundControlContext.h>
#include <aknsdrawutils.h>
#include <aknscontrolcontext.h>
#include <AknsSkinInstance.h>
#include <aknsutils.h>
 
 
class CSkinnedContainer : public CCoeControl
{
public:
static CSkinnedContainer* NewL(void);
~CSkinnedContainer();
protected:
TTypeUid::Ptr MopSupplyObject(TTypeUid aId); //
private:
virtual void SizeChanged();
virtual void HandleResourceChange(TInt aType);
void ConstructL(void);
void Draw(const TRect& aRect) const;
private:
CAknsBasicBackgroundControlContext* iBgContext;
};
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